Roland GT-PRO Owner's Manual download pdf (Page 54)

Chapter 4 Introduction to Effects and Parameters

AMP CTL (Amp Control) 1/2

By connecting your guitar amp’s channel switching jack to

the GT-PRO’s AMP CTL 1 (AMP CTL 2) jack, you can then

use [AMP CTL 1] ([AMP CTL 2]) to switch the amp channel.

There are two systems, AMP CTL 1 and AMP CTL 2, that

you can use.

This combining of the GT-PRO and the amp channels allows

you to get an even wider variety of distortion sounds.

Since the Amp Control setting is handled as one of the effects

parameters saved to each individual patch, it allows you to

switch guitar amp channels with each patch.

fig.04-0190

* To determine how the amp channels are switched when the

circuit is open and shorted, refer to the amp owner’s manual,

or actually confirm the sounds by operating the amp.

With Amp Control, not only can you switch amp

channels, you can also use it to switch the external effect

device’s effects on and off, like a foot switch controller.

MASTER

The following parameters can be set with MASTER.

• NS (Noise Suppressor)

• Patch Level

• Output

• Master BPM

• FV (Foot Volume)

NS (Noise Suppressor)

This effect reduces the noise and hum picked up by guitar

pickups. Since it suppresses the noise in synchronization

with the envelope of the guitar sound (the way in which the

guitar sound decays over time), it has very little effect on the

guitar sound, and does not harm the natural character of the

sound.

* Please connect the noise suppressor in the signal path prior to

the reverberation type effect. This setup will prevent an

natural break of the reverberation type effect.

Lit

Open

Guitar Amp

(amps channel switching jack)

GT-PRO

(AMP CTL 1/2 jack)

Short

Guitar Amp

(amps channel switching jack)

GT-PRO

(AMP CTL 1/2 jack)

Off

AMP CTL 1

AMP CTL 2

AMP CTL 1

AMP CTL 2

Parameter/

Range

Explanation

On/Off

Off, On Switches the noise suppressor effect on/off.

This parameter can be set with the PATCH/VALUE dial.

When NS is On, the [MASTER] indicator lights.

* Even if [MASTER] is pressed, you cannot switch the noise suppressor

on and off.

Threshold

0–100

Adjust this parameter as appropriate for the

volume of the noise.

If the noise level is high, a higher setting is appropriate. If the noise

level is low, a lower setting is appropriate. Adjust this value until the

decay of the guitar sound is as natural as possible.

* High settings for the threshold parameter may result in there being no

sound when you play with your guitar volume turned down.

Release

0–100

Adjusts the time from when the noise sup-

pressor begins to function until the noise

level reaches “0.”

Detect

Input, NS Input,

FV Out

This controls the noise suppressor based on

the volume level for the point specified in

Detect.

Input

Input volume from input jack.

NS Input

Noise suppressor input volume.

FV Out

Volume after passing through Foot Volume.

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Roland GT-PRO Owner's Manual Page 54

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